Abstract: A screwing tool, including an elongate handle which, at each of the two ends thereof, bears a head pivotable about a pivot axis and having two torque transmission flanks in each case and has a force application flank for introducing a force in order to produce a torque on the head remote from the relevant force application flank, wherein, in a pivoting end position of the head, in which a stop of the head lies against a counter stop of the handle, a narrow side of the head functionally directed away from the stop forms an extension of the force application flank. The second head forms an extension of the force application flank and can be used as a hand grip.

Abstract: A wrench has a first segment and a second segment pivotally coupled together. The second segment is selectively positionable at various fixed pivotal positions relative to the first segment. The first and the second segments engage with a locking device. The first segment has a first joining end forming a first positioning surface and a second positioning surface. The locking device includes a catch selectively engagable and disengagable from the first and the second positioning surfaces. The catch has a body section abutting against the first positioning surface in a direction radial to the axis of rotation when the first segment is at a first fixed pivotal position relative to the second segment. The first body section is abutted against the second positioning surface in a direction radial to the axis of rotation when the first segment is at a second fixed pivotal position relative to the second segment.

Abstract: A telecommunications assembly includes a chassis and a plurality of fiber optic splitter modules mounted within the chassis. Each splitter module includes at least one fiber optic connector. Within an interior of the chassis are positioned at least one fiber optic adapter. Inserting the splitter module through a front opening of the chassis at a mounting location positions the connector of the splitter module for insertion into and mating with the adapter of the chassis. The adapters mounted within the interior of the chassis are integrally formed as part of a removable adapter assembly. A method of mounting a fiber optic splitter module within a telecommunications chassis is also disclosed.

Abstract: A disposable oil filter containment sheath is provided for use during oil changes for combustion engines. The sheath has a closed bottom, a cylindrical sidewall, and an open top. The resilient sheath is rolled to an initial collapsed position for placement on the bottom of an oil filter mounted on the engine, and it is partially unrolled along the filter. The filter can then be loosened to allow oil to drain into the sheath for capturing a reservoir. After the filter is removed from the engine, the sheath is completely unrolled and tied at the top so as to fully enclose and contain the oil filter and oil. The sheath and its contents are then ready for disposal.

Abstract: A quick reciprocating wrench includes a main body, a claw, and an elastic device therebetween. The main body includes a first jaw opening having a pivot end and a block portion. The claw includes a second jaw opening having a pivotal combination portion and a retaining portion. The pivotal combination portion is pivotally connected with the pivot end, so the claw and the main body pivotally move against each other. The fastener is engaged in the first and the second jaw openings. Distance between the block portion and the neighboring force bearing face of the fastener decreases along a direction in opposite to the expansion direction of the claw and the block portion. The largest width of the distal end of the retaining portion is greater than the smallest distance between the block portion and the first force bearing face of the fastener.

Abstract: An ATV jack may include an adjustable jack leg and an engagement member configured to engage a bracket disposed on an ATV to non-pneumatically lift the ATV to enable changing of a tire.

Abstract: A ratchet tool apparatus including an elongated tubular shaft member having a drive socket built into the shaft at a distal end and having a worm screw gear attached to the shaft at a proximate end, a worm wheel having mating teeth members that mesh with the worm screw gear, a socket receiving orifice for receiving one of a plurality of socket attachments, a switch mechanism that is manually switched between a left directional mode of operation, a right directional mode of operation and a free spin mode of operation, the switch mechanism including a cover; a plurality of sealed bearings attached to the shaft member to stabilize the motion of the shaft member, and a housing unit having a cavity in which is mounted the elongated shaft member, the worm wheel, the worm screw gear, the socket receiving orifice, the switch mechanism, and the plurality of sealed bearings. The housing unit includes a handle region and a head region, the handle region has a L shape and includes a lever member.

Abstract: A data cable tool apparatus is disclosed. An example data cable tool apparatus includes a cable carrier having a connector cavity to receive a connector of a cable, and a lever having a tab depressor, pivotally coupled to the cable carrier, to move the tab depressor relative to the connector cavity of the cable carrier.

Abstract: A pull aid structure includes a handle; a connecting element movably disposed at the handle; and a positioning element disposed at the handle and movably coupled to the connecting element. The pull aid structure enables a user to place the connecting element on an object, rotate the handle to fasten another object, confine the positioning element to the connecting element, and compress an elastic element, so as to couple together the two objects. To remove one of the objects, the user separates the positioning element and the connecting element to thereby separate the two objects, thereby achieving quick coupling and ease of removal.

Abstract: An open-end wrench is provided. A push head of an operating handle is accommodated in a coupling slot of a jaw. A portion of an inclined guide surface, first and second clamping surfaces and a swing support point normally extend to a jaw opening. When the open-end wrench is used to screw or unscrew a hexagonal screw member, a first entrance guide surface and a second entrance guide surface of the jaw guide a pair of sides of the hexagonal screw member for the hexagonal screw member to enter the jaw opening, and five sides of the hexagonal screw member can be clamped quickly to enhance the convenience for screwing or unscrewing the hexagonal screw member. In addition, the hexagonal screw member won't slide out of the jaw opening during the backswing process of the operating handle so as to screw or unscrew the hexagonal screw member stably.

Abstract: The present invention may be used for rotating a polygonal object. A first wrench member may have a handle with two ends with a fixed jaw attached at a first end and with a cavity formed in the fixed jaw and first end. A second wrench member may be a movable jaw with a curved jaw attached to a ratcheting element. The ratcheting element may be slidably positioned in the cavity to position the curved jaw opposite the fixed jaw. The second wrench member may be constrained by the cavity and a cavity insert member to slide in said cavity about the center of an arc. The cavity insert member is positioned between a rearward wall of the cavity and the ratcheting element and retains the ratcheting element within the cavity.

Abstract: A wrench that has an adjustable wrench head, a wrench handle, and an attachment means for attaching the wrench handle to the wrench head. The wrench head has an orifice configured to control the rotation of a work-piece such as a nut or bolt. The wrench handle has an attachment section and a gripping section. The attachment section is formed for attachment with the wrench head and has a hole with a central axis extending in a direction towards the wrench head. The gripping section is formed for gripping by a user and connects with the attachment section beside the central axis, whereby, when the wrench handle is viewed from an end view thereof, the gripping section is nonaligned with the central axis of the attachment section at the connection of the gripping section with the attachment section. The wrench handle is formed for at least partial rotation about the axis of the attachment section.

Abstract: The present invention may be used for rotating a polygonal object. A first wrench member may have a handle with two ends with a fixed jaw attached at a first end and with a cavity formed in the fixed jaw and first end. A second wrench member may be a movable jaw with a curved jaw attached to a ratcheting element. The ratcheting element may be slidably positioned in the cavity to position the curved jaw opposite the fixed jaw. The second wrench member may be constrained by the cavity and a cavity insert member to slide in said cavity about the center of an arc. The cavity insert member is positioned between a rearward wall of the cavity and the ratcheting element and retains the ratcheting element within the cavity.

Abstract: An adjustable wrench is provided. The adjustable wrench includes a main body extended and formed with a fixed jaw having a first clamping face. An arc-shaped sliding space is formed between the main body and the fixed jaw. A gear member is rotatably disposed in the main body. A part of the gear member is revealed for allowing the teeth to partially reach to within the sliding space. An end of the movable jaw is pivotally connected to a free end of the fixed jaw. A guiding rib of the movable jaw has a toothed row to mesh with the gear member. The movable jaw has a second clamping face, and a clamping space is formed between the first and second clamping faces. When the gear member is driven by a tool to rotate, the clamping space can be quickly adjusted.

Abstract: A wrench head includes a first jaw member, a second jaw member, and a third jaw member. The first jaw member includes a first prong and a second prong. The second jaw member includes a third prong and a fourth prong. The second jaw member is pivotally coupled to the first jaw member at a first hinge. The third jaw member includes a fifth prong and a sixth prong. The third jaw member is pivotally coupled to the first jaw member at a second hinge.

Abstract: A wrench fitted with a handle and a ring that can be swiveled open to grip a screw head or a nut with a positive fit, whereby the ring has a first segment that is arranged on the handle, and a free second segment as well as a connecting member that joins the second segment to the first segment in an articulated manner. A lever is provided on the connecting member so that the ring that can be swiveled open.

Abstract: The invention comprises a ratchet style flare nut wrench which incorporates an assembly to provide a torqueing function and ratchet effect. The assembly includes a wrench body capable of providing torque delivery through three rotating cylindrical cams which contact the nut. The cylindrical cams then rotate when reversing the direction of the wrench assembly so that a cutout portion of the cylindrical cams allows the nut points to pass by. Two cylinder cams are mounted on movable guide blocks which adjust the wrench for different size nuts.

Abstract: In one embodiment, a valve wrench for rotating a knob may include a handle and a jaw assembly coupled to the handle. The jaw assembly may include a fulcrum member, a hook member and a bias member. The hook member may be pivotably coupled to the fulcrum member and may be aligned to the fulcrum member at a pivot angle. The fulcrum member and the hook member can form an opening there between to accept the knob. The bias member may be disposed between the fulcrum member and the hook member to bias the hook member towards the fulcrum member when the jaw assembly is engaged with the knob.

Abstract: The present invention relates to an adjustable wrench. The adjustable wrench comprises a handle part, a curved jaw part, a linkage part, an adjusting element and a restoring element. The handle part comprises a toothed portion. The curved jaw part is pivotally connected to the handle part. When the adjusting element is pushed by an external force, the adjusting element further moves the linkage part simultaneously, and the linkage part pulls the curved jaw part to rotate so as to adjust a size of an opening between the curved jaw part and the toothed portion. Accordingly, the present invention has advantages and effects of fast and simple adjustment for use and a lever arm thereof being adjustable for labor saving, etc.

Abstract: An adapter encircles and locks around nut members of pipe unions or nuts made up on fasteners, or cylindrical members, and engages the nut member or cylindrical member in locking contact. The adapter has strike surfaces which allow the nut member or cylindrical member to be tightened or loosened by a hammering means, such as a hammer, mallet or sledge hammer. Thus, in the case of a pipe union, the device temporarily converts a nut union to a hammer union. The apparatus is configured to facilitate attachment of the device in tight situations, such as attaching the device to the nut member of a pipe union, or to a fitting, within a piping manifold having closely spaced parallel pipelines.

Abstract: The invention comprises a ratchet style open end wrench which incorporates an assembly to provide a torqueing function and ratchet effect. The assembly includes a wrench body capable of providing torque delivery through two or more rotating cylindrical cams which contact the nut. The cylindrical cams then rotate when reversing the direction of the wrench assembly so that a cutout portion of the cylindrical cams allows the nut points to pass by. In one embodiment, the direction of the ratchet effect is reversible by a reversing arc wire which is activated by use of a lever.

Abstract: A ratchet wrench applicable to multi-size workpieces comprises: a wrench with a handle and a head wherein the head has a hollow handle hole in which there are two neighboring surfaces along its inner edge, a first support surface and a second support surface, and an accommodating space embedded into the handle; a support portion with a ratchet part and a resilient member wherein the ratchet part allows one end to be pivoted in the accommodating space and is provided with an arc-convex portion, which is within the hollow handle hole for a first working space developed inside, and the resilient member always exerts a resilient resistance on the ratchet part. As such, the ratchet wrench depends on a simple mechanism and is applicable to continuous screw operation of various screw fastening elements for excellent convenience and swiftness.

Abstract: A wrench fitted with a handle and a ring that can be swiveled open to grip a screw head or a nut with a positive fit, whereby the ring has a first segment that is arranged on the handle, and a free second segment as well as a connecting member that joins the second segment to the first segment in an articulated manner. A lever is provided on the connecting member so that the ring that can be swiveled open.

Abstract: A driving tool (102) comprises a socket (108) mounted at an end of a shaft (103). Shaft (103) has a deformable shaft portion. The socket (108) comprises a plurality of resilient jaws (110) which are adapted to be compressed together to grip a head of a fastener. A sleeve (105) comprises a deformable portion (106). The sleeve (105) is slidably mounted on shaft (103). A collar (118) is mounted to the end of sleeve (105) and is slidable along deformable shaft portion (104) and over jaws (110). Length adjustment means is provided to enable adjustment of the length of the deformable shaft or the deformable sleeve. The length adjustment means comprises a first sleeve member (130) having a first threaded portion threaded onto a second threaded portion of a second sleeve member (136).

Abstract: A reversible open end wrench includes a handle, a head and a retainer. The head includes a first jaw, a second jaw and an extension section. The jaws and the extension section define a driving area therebetween. The first jaw has a first engaging surface and a distal end. The second jaw has a second engaging surface. The horizontal distance between the two engaging surfaces is s. The retainer is disposed on the distal end and has a retaining end extending toward the driving area. The retaining end is movable between a first position and a second position. As the retaining end locates at the first position, the horizontal distance between the retaining end and the second engaging surface is smaller than s. As the retaining end locates at the second position, the horizontal distance between the retaining end and the second engaging surface is no smaller than s.

Abstract: A wrench comprises a handle portion, a head portion releasably secured to the handle portion and a release device. The head portion has an inner surface that defines a fastener receiving aperture and a side entry to the fastener receiving aperture and is movable relative to the handle portion between a loading position in which the side entry is open and an operating position in which the side entry is closed. The head portion is operable to close around a fastener received in the fastener receiving aperture in response to a torque applied in a predetermined direction using the handle portion. The release device is arranged to at least assist in releasing the head portion from the handle portion to permit the head portion to be separated from the handle portion.

Abstract: A adjustable wrench comprises a body used to operate the adjustable wrench including a fixed jaw extending outward therefrom and having a holder mounted on a top end thereof, including an arcuate recess fixed on a middle portion of a front side thereof; a movable jaw pivoted in the holder, serving as engaging a workpiece, and including a guiding rib relative to the arcuate recess extending from a bottom end thereof to be adjusted and moved along the arcuate recess; a locking mechanism axially displacing in the cavity of the body and including a control unit to operate the locking mechanism and to drive a pushing member, the control unit including locking and unlocking positions so as to move the pushing member across the notch of the arcuate recess and then to bias against the guiding rib, thereafter, the pushing member is driven to move downward, thus disengaging the guiding rib to slide freely.

Abstract: The present invention may be used for rotating a polygonal object. A first wrench member may have a handle with two ends with a fixed jaw attached at a first end and with a cavity formed in the fixed jaw and first end. A second wrench member may be a movable jaw with a curved jaw attached to a ratcheting element. The ratcheting element may be slidably positioned in the cavity to position the curved jaw opposite the fixed jaw. The second wrench member may be constrained by the cavity and a cavity insert member to slide in said cavity about the center of an arc. The second wrench member may be spring biased by an elastic compression element to move toward the fixed jaw. A gripping surface of the curved jaw may be structured relative to the center of the arc to cause the curved jaw to be urged toward the fixed jaw when rotating the fixed jaw against an intervening polygonal object, and to cause the movable jaw to ratchet open when the handle is rotated in the opposite direction.

Abstract: The invention relates to a manual wrench for actuating cylindrical elements. The inventive wrench comprises a fixed jaw (1) and a moving jaw (3) which are disposed on one end of a handle (2), whereby the fixed jaw (1) is secured with a transverse keyed assembly. The invention also includes an elastic pin (5) which extends through said keying. Moreover, the face of the fixed jaw (1) that faces the moving jaw (3) is equipped with a toothed section (7) comprising identical teeth which extend along a curved zone such as to define a single arc.

Abstract: An adjustable wrench is provided for selectively producing a fixing movement or a pivotal turning movement by pressing or releasing a stop module to pivot the pivotal jaw, so that the adjustable wrench can change the width of its opening quickly, and such adjustable wrench provides an excellent operation and also reduces the operating time greatly.

Abstract: A wrench includes a handle, and a driving unit pivotally mounted on the handle. The handle has an end portion provided with a support surface. The driving unit includes a first jaw having a first end pivotally mounted on the end portion of the handle, and a second jaw having a first end pivotally connected with a second end of the first jaw and a second end that is movable to abut the support surface of the handle and the first end of the first jaw. Thus, the second end of the second jaw abuts the support surface of the handle tightly and closely so that the force applied by a user is transmitted to the wrench directly so as to drive the wrench to operate the workpiece in an energy-saving manner.

Abstract: A pair of pliers include a shank, a fixed jaw locked onto the shank, and a movable jaw pivotally mounted on the shank and movable relative to the fixed jaw. Thus, the first contact point of the locking teeth of the fixed jaw and the second contact point of the first engaging teeth of the first toothed face of the movable jaw have a larger friction with a workpiece by a special angle design of the fixed jaw and the movable jaw to enhance the clamping force of the fixed jaw and the movable jaw on the workpiece, so that the workpiece is clamped by the fixed jaw and the movable jaw exactly and closely to prevent the workpiece from being slipped from the fixed jaw and the movable jaw during operation of the pliers.

Abstract: A wrench capable of engaging a workpiece from the side or top. When the workpiece is engaged on the side, a movable jaw opens when a slight pressure is applied against a flat or a point of the nut or bolt. After the jaws of the wrench have pushed past the workpiece, a pin and spring mechanically return the moveable jaw to its closed position. In its closed position, the workpiece is retained by the jaws in the proper seat position. When tightening or loosening the workpiece, the direction of the pull is towards the fixed jaw. Disengagement between pulls is accomplished by turning in the opposite direction of pull. The wrench rides over the points of the workpiece and automatically reseats itself.

Abstract: The present invention relates to a spanner having a toggle bar installed in at least a jaw and allowed to be rotated in one direction for tightening or releasing a bolt (or nut) continually by continuous operation of rotating the spanner's lever in one and other converse directions repeatedly in a state of gripping the bolt, which is also easily operative for tightening or releasing a bolt (or nut), especially when placed in a narrow gap. The spanner is constructed to comprise a lever; a jaw and a second jaw respectively extending from both sides of the lead end of the lever and forming a gripping space therebetween for gripping a bolt; a toggle bar installed on the lead end of the second jaw to be allowed to be rotated only to the outward of the gripping space; and a tension adjustment bolt installed in the long hole formed on the bottom of the second jaw and having a lead end connected to the inner side of the toggle bar so as to elastically support the toggle bar to the inward of the gripping space.

Abstract: An open end wrench includes a body portion including an elongated longitudinal portion defining a longitudinal axis and having an interior space, and an arcuate first jaw portion fixed to one end of the elongated portion; a second arcuate jaw portion pivotally attached to the arcuate first jaw portion and defining a gripping space therebetween for receiving a fastener, said second arcuate jaw portion being pivotally movable between a gripping condition for gripping the fastener when the wrench is turned in one direction and an non-gripping condition for permitting the arcuate second jaw portion to slip around the fastener without gripping when the wrench is turned in an opposite direction; and (c) resilient means longitudinally oriented and positioned in the interior space of the longitudinal portion of the body for biasing the second jaw portion into the closed position.

Abstract: An adjustable wrench or spanner is disclosed. It comprises essentially an elongated handle element with a convex urging portion at one end, an upper jaw element with a concave urging portion, a lower jaw element with a protrusion portion and a ratchet assembly. The upper jaw element is movable with the assistance of the two engaging urging portions and the lower jaw element is adjustable with the assistance of the ratchet assembly. Two jaw portions are operable in tightening or loosening positions, without having to be disengaged from a hexagonal nut. When the jaw portions are opened in a loosening position, gripping edges of the jaw portions are allowed to shift from one width across flats to another width across flats.

Abstract: An adjustable spanner wrench for various spanner head work piece having different size holes where various spanner driver element are able to be stored on the arms of the wrench itself, instead of being stored somewhere else in a separate container where they can be easily lost or misplaced.

Abstract: A Pipe Wrench with: reasonable coordination on distance between—Center of Arcuate Teeth and Link-Hole, eccentric length of Tips of Arcuate Teeth and Link-Hole; Instant Grip and Release, Time-Saving, Power-Saving, easy Operation is disclosed. It is composed of Heading-Hook, Main Body, Arcuate Jaw-Block, Spring-Guard Plate, Spring, Oil-Rope, Pin and Screw Bolt. The Jaw-Block designed by two (2) different sizes of Arc is inlaid in Slot B on Handle, due to designed size of Link-Hole being eccentric from center of Arcs of Jaw-Block is well coordinated with Arcs on Tip Teeth of Jaw-Block, which enables this Invention with Reliable and Firm Self-Lock on workpiece as well as its Open-Width being enlarged.

Abstract: A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displaceable toward and away from the fixed jaw, whereby a pipe of given diameter to be gripped by the wrench is cradled between the first and second jaw surfaces and engaged by the one of the discrete teeth provided on the arcuate jaw for the pipe of given diameter.

Abstract: An adjustable wrench for vehicle service includes a main shaft, a actuated shaft pivotally connected to the main shaft and a controlling unit pivotally mounted on the main shaft for selectively braking the actuated shaft. The main shaft includes a first end having a grip sleeved thereon and a second end having a first hook formed thereon and a first stub extending therefrom. The actuated shaft includes a first end pivotally mounted on the main shaft, and a second end having a second hook formed thereon and a second stub extending therefrom. The first and second hooks are provided to engaged to two stubs extending from a workpiece for detaching/mounting the workpiece. The first and second stubs are inserted into two holes in the workpiece for detaching/mounting the workpiece. The controlling unit controls an angle between the main shaft and the actuated shaft.

Abstract: A self-adjusting wrench having a handle and a jaw member rotationally attached thereto. A smoothly curved handle face opposes a planar face on the jaw member which adjusts for distance from the curved handle face by following a generally circular path around a pinned attachment of the jaw member to the handle. A spring or similar biasing device continuously urges the jaw member toward the handle thereby making the device self adjusting to the size of the object placed between the jaw member and the curved handle surface.

Abstract: A hook screw driver includes a first body, a second body having a first end pivotally connected to a first end of the first body, and a tightening member. The tightening member extends along a direction substantially perpendicular to an extending direction of the first body and an extending direction of the second body. The tightening member is movable between a first position at which a second end of the first body is spaced from a second end of the second body and a second position at which the second end of the first body presses against the first end of the second body, thereby securely holding a hook portion of a hook screw placed between the second end of the first body and the second end of the second body.

Abstract: A hand tool for tightening or loosening a threaded cylindrical member relative to a corresponding threaded socket, including a generally rectangular wrench body which contains a generally circular opening for coaxially receiving the cylindrical member, a generally disk-shaped locking cam that is moveably connected with the wrench body for displacement between extended and retracted positions extending within and withdrawn from the circular opening, respectively, thereby clamping the threaded cylindrical member when the locking cam is extended into the circular opening, and a handle member operable when the cam is in the extended position to rotate the wrench body with the cylindrical member clamped thereto relative to the threaded socket.

Abstract: A hook screw driver includes a first body and a second body. An end of the first body is connected to an end of the second body. The other end of the first body and the other end of the second body are movable between an open position and a closed position for clamping a hook screw. The hook screw driver includes a tool-coupling portion for coupling with an end of a tool for tightening/loosening fasteners.

Abstract: A ratchet wrench for turning threaded fasteners, particularly fasteners threaded on a stud or pipe located in areas of limited or obstructed access to the fastener. The wrench is operated remotely at an end of the wrench away from a fastener engagement portion. The wrench includes a side mounted actuator assembly which allows a moveable jaw to open and close around the fastener. A closing bias force is maintained on the movable upper jaw by a spring included in the actuator assembly. The closing bias force allows a fastener to be held in position for rotation and when exceeded, allows the movable upper jaw to ratchet around the fastener. The engagement portion of the wrench may be configured with either a hexagonal or dodecahedral shaped opening. When operatively engaged with the fastener, the wrench fully encompasses the fastener to limit slippage.

Abstract: A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displaceable toward and away from the fixed jaw, whereby a pipe of given diameter to be gripped by the wrench is cradled between the first and second jaw surfaces and engaged by the one of the discrete teeth provided on the arcuate jaw for the pipe of given diameter.

Abstract: A device for use in turning a nut relative to a bolt includes a first elongated inflexible member having a first handle end and a first jaw end. A second elongated inflexible member includes elongated members are pivotably connected to each other. Each jaw is dimensioned to engage in combination substantially the entire peripheral surface of a nut, but less than the entire surface of the head of the nut such that the jaws ends can not touch each other when the jaws are separated by a nut.

Abstract: A valve wrench for tightening a male adaptor onto a valve. The valve wrench includes a base member having a pair of opposing ends. Each of the ends of the base member has a bore. The bore of each of the ends extends through the base member whereby the bore of each of the ends is designed for receiving the male adaptor. The base member is designed for being gripped by a hand of the user. Each of the ends of the base member has plurality of angled teeth. The angled teeth inwardly extend from an interior surface of an associated one of the ends of the base member whereby the angled teeth are designed for engaging the male adaptor to preventing slipping of the base member with respect to the male adaptor when the base member is being used to rotate the male adaptor with respect to the valve.

Abstract: A hook screw driver includes a first body, a second body having a first end pivotally connected to a first end of the first body, and a tightening member. The tightening member extends along a direction substantially perpendicular to an extending direction of the first body and an extending direction of the second direction. The tightening member is movable between a first position at which a second end of the first body is spaced from a second end of the second body and a second position at which the second end of the first body presses against the first end of the second body, thereby securely holding a hook portion of a hook screw placed between the second end of the first body and the second end of the second body.

Abstract: An open-end wrench includes a main body, a movable jaw plate, and a recovery element. The main body is provided at two longitudinal ends with a slot in which the movable jaw the plate is pivoted. The swiveling of the movable jaw plate is confined by a pin in conjunction with a position confining hole. The recovery element is located between a locating portion of the slot and a fastening portion of the movable jaw plate for providing the movable jaw plate with a recovery force.